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Observation of states beyond band termination in Er-156,Er-157,Er-158 and strongly deformed structures in Hf-173,Hf-174,Hf-175

Riley, M. A.; Djongolov, M. K.; Evans, A. O.; Hartley, D. J.; Janssens, R. V. F.; Paul, E. S.; Pipidis, A.; Simpson, J.; Aguilar, A. A. and Appelbe, D. E., et al. (2006) In Physica Scripta T125. p.123-126
Abstract
High-spin terminating bands in heavy nuclei were first identified in nuclei around Er-158(90). While examples of terminating states have been identified in a number of erbium isotopes, almost nothing is known about the states lying beyond band termination. In the present work, the high-spin structure of Er-156,Er-157,Er-158 has been studied using the Gammasphere spectrometer. The subject of triaxial superdeformation and 'wobbling' modes in Lu nuclei has rightly attracted a great deal of attention. Very recently four strongly or superdeformed (SD) sequences have been observed in Hf-174, and cranking calculations using the Ultimate Cranker code predict that such structures may have significant triaxial deformation. We have performed two... (More)
High-spin terminating bands in heavy nuclei were first identified in nuclei around Er-158(90). While examples of terminating states have been identified in a number of erbium isotopes, almost nothing is known about the states lying beyond band termination. In the present work, the high-spin structure of Er-156,Er-157,Er-158 has been studied using the Gammasphere spectrometer. The subject of triaxial superdeformation and 'wobbling' modes in Lu nuclei has rightly attracted a great deal of attention. Very recently four strongly or superdeformed (SD) sequences have been observed in Hf-174, and cranking calculations using the Ultimate Cranker code predict that such structures may have significant triaxial deformation. We have performed two experiments in an attempt to verify the possible triaxial nature of these bands. A lifetime measurement was performed to confirm the large (and similar) deformation of the bands. In addition, a high-statistics, thin-target experiment took place to search for linking transitions between the SD bands, possible wobbling modes, and new SD band structures. (Less)
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Physica Scripta
volume
T125
pages
123 - 126
publisher
Institute of Physics Publishing Ltd.
external identifiers
  • wos:000238911500030
  • scopus:33846352223
ISSN
0031-8949
DOI
10.1088/0031-8949/2006/T125/028
language
English
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yes
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bd4579f9-c292-47ee-9212-6eb2550480a4 (old id 403742)
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2007-10-15 09:03:39
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2019-08-14 01:48:12
@article{bd4579f9-c292-47ee-9212-6eb2550480a4,
  abstract     = {High-spin terminating bands in heavy nuclei were first identified in nuclei around Er-158(90). While examples of terminating states have been identified in a number of erbium isotopes, almost nothing is known about the states lying beyond band termination. In the present work, the high-spin structure of Er-156,Er-157,Er-158 has been studied using the Gammasphere spectrometer. The subject of triaxial superdeformation and 'wobbling' modes in Lu nuclei has rightly attracted a great deal of attention. Very recently four strongly or superdeformed (SD) sequences have been observed in Hf-174, and cranking calculations using the Ultimate Cranker code predict that such structures may have significant triaxial deformation. We have performed two experiments in an attempt to verify the possible triaxial nature of these bands. A lifetime measurement was performed to confirm the large (and similar) deformation of the bands. In addition, a high-statistics, thin-target experiment took place to search for linking transitions between the SD bands, possible wobbling modes, and new SD band structures.},
  author       = {Riley, M. A. and Djongolov, M. K. and Evans, A. O. and Hartley, D. J. and Janssens, R. V. F. and Paul, E. S. and Pipidis, A. and Simpson, J. and Aguilar, A. A. and Appelbe, D. E. and Bingham, C. R. and Campbell, D. B. and Carpenter, M. P. and Chowdhury, P. and Choy, P. T. W. and Clark, R. M. and Cromaz, M. and Cullen, D. M. and Danchev, M. and Dracoulis, G. D. and Fallon, P. and Gorgen, A. and Hagemann, G. B. and Joss, D. T. and Goon, J. and Kaye, R. A. and Khoo, T. L. and Kondev, F. G. and Laird, R. W. and Lagergren, K. and Lauritsen, T. and Macchiavelli, A. O. and McClain, B. and Moore, E. F. and Mukherjee, G. and Ngijoi-Yogo, E. and Nolan, P. J. and Park, H. I. and Riedinger, L. L. and Sletten, G. and Tandel, S. K. and Walker, P. M. and Ward, D. and Ragnarsson, Ingemar and Saric, Fikret and Zhang, Jing-ye},
  issn         = {0031-8949},
  language     = {eng},
  pages        = {123--126},
  publisher    = {Institute of Physics Publishing Ltd.},
  series       = {Physica Scripta},
  title        = {Observation of states beyond band termination in Er-156,Er-157,Er-158 and strongly deformed structures in Hf-173,Hf-174,Hf-175},
  url          = {http://dx.doi.org/10.1088/0031-8949/2006/T125/028},
  volume       = {T125},
  year         = {2006},
}